You say a quick email.

It wouldn't be quick. And the response might lead to more confusion.

I'm fortunate that T replys to my emails.
In the beginning though, I'd become angry at her response and nothing she could say was right.
Because she knows what she's doing she didn't abandon me but carried on emailing until i worked out what was really going on.
Nowadays its just a quick back and forth.
T use to say that tone cannot be picked up through email nor can she keep me safe through email. But she saw how important that connection was needed in my case.

So. Just be aware. This really isn't just about email. The email represents something (m)other to you.
If a T feels they can't convey tone nor feel they you are safe if email goes wrong then I can see why they won't engage in it.
Plus being left alone isn't quite right.
With time we carry the therapeutic experience within us.
They're are times we feel very alone. But the knowing that we will eventually be back in session and at the very least able to protest this.